Create a free account to hear the telephone sounds online.Register/Sign in Subscribe to our paid premium service and benefit from unrestricted searching, for up to ten users, ad-free. Subscribe now Advertise your VoIP, IP-PBX & Telephony products right here on our website. More info | Country | Tone | Frequency/Hz | Cadence/s | Audio |
| Iran | Test number tone | 800 | continuous |  |
| Luxembourg | Test number tone | 1000 | continuous | |
| Tanzania | Test number tone | 2010 | continuous |
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